Mingcheng GROUP Limited - silicone rubber

Mingcheng GROUP Limited - silicone rubber high quality RTV2 silicone manufacturer

21/06/2018

Two way for silicone rubber mold making: Brushing & Pouring

Mold making by brushing method:
1.Preparing all the tools:cutter、brush、board
2.Fixed the original model, and brush the release agent on it
3.Weighing part A and part B according to the mixing ratio, mixing them evenly
4.Put the silicone mixture into the vacuum machine, vacuumize it until -0.1Mpa
5.Brushing the silicone mixture onto the original model, repeat brushing 3 times, then wait it curing
6.After the silicone is cured, brushing some vaseline on it, to make silicone sofety and then easy to demold
7.Cut a gap on the silicone, and taking off the silicone mold

Mold making by pouring method:
1.Preparing the tools: boards, glue, cutter
2.Fixed the original model on a board, brush the release agent on it evenly
3.Using several boards surround the model, keep the distance between model and boards 5mm
4.Weighing part A and part B according to the mixing ratio, mixing them evenly
(Attention: for addition silicone rubber, keeping the tools and container clean is very important, any impurity will effect the silicone curing)
5.Put the silicone mixture into the vacuum machine, vacuumize it until -0.1Mpa
6.Pouring silicone mixture on the original model
7.Waiting for the silicone completely cured, remove the boards, take out the silicone mold. The mold can be used after 24 hours

11/06/2018

What's the difference of addition silicone rubber & condesation silicone rubber?

*The condensation silicone rubber is a kind of two components silicone, part A is base silicone, and part B is vulcanizing agent. Usually, the mixing ratio of part A and part B is 100:2 or 100:3, you can shorten the curing time by adding some vulcanizing agent, but never make it more than 5%, because the more vulcanizing agent you add, the more shrinkage of the silicone will be, and the silicone may turn out to be smaller, this should be paid a great attention by manufactures, especially for those who making precise products.

*The mixing ratio of Addition silicone rubber is 10:1 or 1:1, it’s quite easy to operate. This kind of silicone rubber is high temperature resistance, and it’s curing time is very related to the temperature, a higher temperature can lead a shorter curing time. For example, under 25℃, the operating time is 30min, over 30min the cross-linking reaction will be happened, the silicone is not fluid, and it need another 6-8 hours to wait it completely cured, however, when the temperature is reach 120-150℃,this silicone can be completely cured within 10min.

The advantages of Condensation curing silicone rubber:
1.Acid and alkali resistance
2.Lower cost
3.Good tear & tensile strength

The advantages of addition curing silicone rubber:
1.Food grade, can meet FDA standard
2.Non-toxic and odorless
3.Environmental-friendly
4.Have a long service life
5.Low shrinkage

The Application for Condensation curing silicone rubber :
Resin crafts、Gypsum mold、Body sculpture、Decorative lighting、GRC、GRG、GFRC、Roman column、Building decoration、Building sealant、Candle crafts、Soap crafts、Plastic crafts、Buddhist statue crafts、Artificial stone

The Application for addition curing silicone rubber :
Cake, candies and chocolates molds、fiberglass、Candle crafts、Soap crafts、Plastic crafts、Artificial stone、Resin crafts、Polyurethane、Gypsum products、cement

Are you interested in more information about RTV2 silicone rubber?
Please feel free to contact us by Email: [email protected] or by Tel: 18774916668

The comparison of plastic mould and silicone mould for artificial cultured stone.Artificial cultured stone gets more att...
08/06/2018

The comparison of plastic mould and silicone mould for artificial cultured stone.
Artificial cultured stone gets more attention than natural stone,one of the reasons is because the Artificial cultured stone is more colorful,but if the mold didn’t handle properly, it will affect the color of the cultured stone.
Generally speaking, people use plastic and silicone rubber for making Artificial cultured stone mold. Plastic mould used in earlier years, it has the advantage of relative low cost, but the plastic mould is not exquisite enough, is hard to paint the color, the pigment absorption rate is low, so, the blurred color surface always happens. Plastic mould is formed by melting at high temperature, because of high energy consumption, strong smell, environmental pollution; they can’t pass the environmental protection bureau.
In recent years, the artificial cultured stone factory use silicone rubber for making the stone moulds, because its easy/simple mold making process, high proficiency in production, cultured stone silicone rubber mould seize delicate textures and pigment absorption rate is higher, therefore, the large-scale artificial cultured stone manufacturers prefer silicone rubber mould.

Today's shipment --- 3432KGS, 220 kg/drum*16drums,  total 4 pallets of silicone rubber ! Come to know us please!Cooperat...
07/06/2018

Today's shipment --- 3432KGS, 220 kg/drum*16drums, total 4 pallets of silicone rubber !

Come to know us please!
Cooperation number : 18774916688
Website: www.mcsilicone.com

What’s rubber? Let's introduce it to you .Rubber is an elastic material.Slicone rubber, also call silicon, silicone. It ...
03/05/2018

What’s rubber? Let's introduce it to you .

Rubber is an elastic material.
Slicone rubber, also call silicon, silicone. It has two parts. both of in liquid form, part A is the white silicone, and part B is the transparent curing agent or Platinum curing agent
Two kinds of silicone rubber, one is addition cure silicone rubber with FDA food grade wihch can be used for food mold making, human boby parts making, electronic products potting, textile products, silicone pad for printing. The mixing is 1:1 or 10:1 or 9:1.
Addition cure silicone is odorless, environmental friendly, and food grade. So the raw material of addition cure silicone is more expensive than that of condensation cure silicone, so does the price.
Other one is condensation cure silicone rubber aslo can be used for same application, if you not care about food grade. Usually the mixing ratio is 100:2 to 5 or 10:1.

our company page:
www.mcsilicone.com

we are a silicone rubber business,www.mcsilicone.com is our company page,which has lots of silicone products,if you are ...
26/04/2018

we are a silicone rubber business,www.mcsilicone.com is our company page,which has lots of silicone products,if you are interested in silicone rubber,i think it is a good page for you.

Silicone molds for artificial stone mold casting.For more information,pls feel free to contact amy:Tel: 0086-769- 826939...
04/01/2017

Silicone molds for artificial stone mold casting.

For more information,pls feel free to contact amy:
Tel: 0086-769- 82693920 Mob/wechat:0086-18664910896
Skype: amyszmc
Email: [email protected]
Website: www.mcsilicone.com
Address: No.3, Chuang Ye 2nd Rd., He Lu Industrial Zone, Huang Jiang, D**g Guan, Guang D**g,China

Address

No. 3, Chuang Ye 2nd Road , He Lu Industrial Zone, Huang Jiang
Dongguan

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